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CNSR
2010
IEEE

Buffered Crossbar Fabrics Based on Networks on Chip

10 years 3 months ago
Buffered Crossbar Fabrics Based on Networks on Chip
— Buffered crossbar (CICQ) switches have shown a high potential in scaling Internet routers capacity. However, they require expensive on-chip buffers whose cost grows quadratically with the port count. Additionally, similar to traditional crossbars, point-to-point switching mandates the use of long wires to connect inputs to outputs, resulting in non-negligible delays. In this paper, we propose a CICQ switching architecture where the buffered crossbar fabric is designed using a Network on Chip (NoC). Instead of a dedicated buffer for every pair of input-output ports, we use on-chip routers, one for each crosspoint. Our design offers several advantages when compared to traditional CICQs: 1) speedup, because the fabric can operate faster due to the small size of the NoC routers, their distributed arbitration and the short wires connecting them. This is in contrast to single-hop crossbars that use long wires and centralized arbitration. 2) Load balancing, because flows from different i...
Lotfi Mhamdi, Kees Goossens, Iria Varela Senin
Added 30 Aug 2010
Updated 30 Aug 2010
Type Conference
Year 2010
Where CNSR
Authors Lotfi Mhamdi, Kees Goossens, Iria Varela Senin
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